6-7
Random Access Adjustment Mode
Raster Shift Adjustment
The green raster must be centered both horizontally and vertically on the
center of the CRT surface. To center the green raster, look into the green
lens and use the control disc to move the raster.
CAUTION
It is necessary to look into the lenses to perform these adjustments. To
avoid eye discomfort while looking into the lenses, reduce the contrast and
gradually increase the brightness level until the raster becomes visible on
the face of the CRT.
To start the adjustment, use the control disc to highlight Raster shift and
press ENTER to display the green raster on the phosphor.
Press EXIT to return to the Geometry menu.
Note : Horizontal and Vertical shifts for Red and Blue should
end up with a setting close to 50%. If these settings are sig-
nificantly greater or lesser than 50%, contact a RUNCO
authorized service technician.
ENTER will select green raster shift adjustment.
EXIT returns to random access adjustment mode menu.
Warning : In order to ensure maximum CRT longevity and to
avoid CRT damage, do not shift the raster outside the phosphor
area of the CRT.
GEOMETRY
H PHASE
LEFT - RIGHT (E-W)
TOP - BOTTOM (N-S)
SIZE
V LINEARITY
BLANKING
Select with
then <ENTER>
<EXIT> to return.
or
RASTER SHIFT
COARSE SHIFT
GREEN HORIZONTAL
GREEN VERTICAL
RED VERTICAL
BLUE VERTICAL
Select with
then <ENTER>
<EXIT> to return.
or
forbidden area projected raster
crt faceplate border
phosphor border
correct raster position
wrong raster position